baber/WOPTO huggingface dataset:
Patent GB-541311-A (GB)
Title: Improvements in locks
IPC: E05B21/00
Filed: 1940-07-23
Abstract: 541,311. Locks. WILSON, D. July 23, 1940, No. 12061. [Class 44] A lock has levers (four shown at d, d<1>, d<2>, d<3>), pivoted at e, each lever having a pair of pins f, f<1>, one at each end. In the'unlocked position shown, to which the levers are brought by a key i against the action of springs g, the ends of both pins on each lever are just clear of the bolt a. In all other angular positions of each lever one or other of its pins engages a slot, c on c<1>. formed in the bolt so release cannot be effected by a key which rocks one or more of the levers to little or too much. One or both of each pair of pins may be adjustable, as by a tubular portion h<1>, Fig. 6, screwing on to a stem h. The bolt may be operated by a knob k, or by a second key.
Patent GB-357511-A (GB)
Title: Improvements in and relating to electric transformers and the like
IPC: H01F27/36
Filed: 1930-04-16
Abstract: 357,511. Transformers ; inductances. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Blume, L. F. ; 15, Arlington Street, Pittsfield, Massachusetts, U.S.A., and Dwyer, W. O.; 131, Johnson Street, Kingston, Ontario, Canada.) April 16, 1930, No. 12072. Convention date, April 22, 1929. [Class 38 (ii).] For distributing electrostatic stresses uniformly throughout a transformer or like inductive winding comprising groups of turns 10, 11, 12 series - connected between a high voltage terminal 23 and earth 22, electrostatic shields are associated with the group of turns so as to control the potential distribution in each group appropriate potentials being impressed upon the shields by connecting the shield 14 directly to the high voltage terminal, the shields 15, 16 to the high voltage terminal through a condenser 24, the shields 17, 18 to the high voltage terminal through a condenser 25 of smaller capacity, and the shield 19 to the earthed end of the winding. A modification is described in which the method of distributing electrostatic stresses is applied to a bank of transformers having their high voltage windings in series. Specification 173,606, [Class 38 (ii), Electric currents, Converting &c.], is referred to.
Patent GB-1503761-A (GB)
Title: Surveillance arrangements
IPC: D01F4/00
Filed: 1975-03-22
Abstract: 1503761 Infra-red surveillance ELLIOTT BROS (LONDON) Ltd 25 Feb 1976 [22 March 1975] 12072/75 Heading H4F A surveillance system comprises a television camera I and display 3 providing an image of a scene, and an array of infra-red detectors 5 which view part of the same scene and provide brightenup signals to the display 3 to highlight heatemitting objects. The system is airborne, the t.v. camera 1 being a low light-level type viewing a portion of the ground ahead of the aircraft and providing a head-up display 3. The infra-red detectors 5 may be arranged either as a fixed linear array viewing a horizontal band across the centre of the scene or as a short vertical array which is scanned across the scene. Threshold detectors 10 sense which i.r. detectors are providing a significant output and store the results. The stored information is then mixed with the appropriate portion of the video signal from camera 1 after making allowance 14 for aircraft velocity and attitude.
Patent GB-558828-A (GB)
Title: Revolving high-speed search-light for military and naval purposes
IPC: F21W111/06
Filed: 1942-08-28
Abstract: 558,828. Searchlights. BROUGH, J. G. Aug. 28, 1942, No. 12172. [Class 75 (iv)] A steel dome fitted internally with four sloping mirrors A1 is rapidly revolved on ball bearings carried by a casing fitted internally with four sloping mirrors A2 so that the light emitted from an arc or other lamp at the base of the casing suffers multiple reflection and issues from two opposite glazed apertures f in the dome as two revolving beams which illuminate a large area in the sky. The dome may be turned by hand through chain and toothed gearing or by electric or other power. The upper part of the dome is fitted with ventilating scoops d. The mirrors may slope at an angle of 45 degrees.
Patent GB-752133-A (GB)
Title: Fluid pumping system and regulating means therefor
IPC: F04B49/10
Filed: 1954-04-27
Abstract: 752,133. Fluid-pressure servomotor-control systems; valves. BENDIX AVIATION CORPORATION. April 27, 1954 [May 7, 1953], No. 12180/54. Class 135. A fluid pumping system including a regulating device for maintaining the pump output constant irrespective of the fluid temperature comprises temperature-responsive orifice means interposed between the inlet and the outlet of the device to vary the flow in accordance with temperature changes of the fluid and means responsive to the pressure drop across the orifice means operatively connected to an element controlling the pump. As shown, the regulating device 40, Figs. 1, 2, comprises a casing 48 having an inlet 38, an outlet 46 and connections 42, 44 to opposite sides of a pressure-responsive diaphragm 26 made from material having a low coefficient of expansion, e.g. that known under the Registered Trade Mark " Invar," and a threaded sleeve 76 and an adjusting screw 84 made of a material having a high coefficient of expansion, e.g. aluminium alloy. The orifice means comprises an annulus 98 formed between a knife-edge 72 on the sleeve 76 and a conical surface 54 of the casing and a port 74 in the sleeve which coacts with the conical tip 86 of the screw 84. A casing groove 82 coacts with the lug 80 on the sleeve 76 to permit adjustment between the sleeve and the screw 84. The diaphragm 26 is connected by an adjustable rod 20 and a lever 18 to a valve 16 in the supply line 12 to a turbine 10 driving the pump 34. If, after the adjustment of the pump output in accordance with the temperature by means of the screw 84 and the rod 20, the temperature of the pump fluid should change, e.g. increase, the pump will unload, and its delivery increase. At the same time, the parts 76, 84 will expand relatively to the casing 48, restricting flow to the annulus 98 and the port 74 to produce a pressure differential across the diaphragm 26 which adjusts the valve 16 to decrease the supply of operating fluid to the turbine. The turbine speed and that of the pump then decreases to adjust the pump output to its previous vaule.
Patent GB-122591-A (GB)
Title: Improvements in Self-acting Mules.
IPC: D01H3/12
Filed: 1918-07-27
Abstract: 122,591. Lees & Co., A., and Holt, J. July 27, 1918. Mules.-In a roving-motion of the type described in Specification 17520/91, the winding- chain i is deflected through a chain p by means of a combined pulley m and cam m<1> mounted loosely on a stud k on the quadrant arm h. The chain p is attached to the cam m<1>, and a chain n is attached to the pulley m and to the depending lever g, the position of which is regulated by the lever b controlled by the shaper screw. Specifications 3909/72 and 5571/86 also are referred to.
Patent GB-869025-A (GB)
Title: Improvements in or relating to automatic gain-control circuits
IPC: H04N5/52
Filed: 1958-04-18
Abstract: 869,025. Automatic gain control. FERNSEH G.m.b.H. April 18, 1958 [April 18, 1957], No. 12342/58. Class 40(5) An a.g.c. circuit used to prevent overload, e.g. in a television transmitter or relay link comprises a variable gain amplifier (Fig. 1, not shown) followed by a separator circuit which applies any part of the signals exceeding a predetermined amplitude to a lowpass filter followed by a rectifier, the smoothed output of which controls the gain of the amplifier. The output of the separator circuit is applied via cathode follower 29, Fig. 2, to the lawpass filter, which comprises ganged variable resistors 31, 32 in series and condensers 33, 34 in shunt, and this feeds via condenser 35 to the voltage-doubling rectifier 36, 37. The rectified D.C. produced across resistor 38 is applied to the gain-controlled amplifier from terminal 42, the fixed standing bias for the amplifier being applied to terminal 39. The lowpass filter prevents unnecessary reduction of the gain by an occasional signal exceeding the nominal peak level, such signals being dealt with by a clipping circuit following the apparatus described.
Patent GB-494837-A (GB)
Title: Improvements in driving gear for automatic lathes
IPC: B23Q5/04
Filed: 1937-05-01
Abstract: 494,837. Change-speed and reversing gearing. HAHN, H., HAHN, O., and TESSKY, K., (trading as INDEX-WERKE HAHN & KOLB). May 1, 1937, No. 12457. Convention date, May 8, 1936. [Class 80 (ii)] [Also in Group XXII] The change-speed gearing for automatic lathes having a reversible spindle operated by a friction reversing clutch, two parallel countershafts j, e are connected together by changewheels g, f and each carries a friction clutch, the driving part of which is axially displaceable but secured against rotation relatively to its countershaft whilst the driven clutch halves run freely on the countershafts when disengaged but are interconnected by toothed gearing and carry integral therewith, sprocket wheels or pulleys k, p, each of which drives one part of the usual friction reversing clutch m of the spindle. The driving shaft b drives through pick-off gears c, d the countershaft e, and further pick-off wheels f, g drive the second countershaft j. Clutch halves h, n slidably keyed to the countershafts are interconnected so as to be capable of alternate engagement by the rod s through the lever t and cam-shaft u. The driven clutch halves o, i are formed with interengaging toothed peripheries and the arrangement gives alternative pairs of speeds in both directions, the ratios between the higher forward and reverse speeds and the lower forward and reverse speeds being variable by changing the pick-off wheels f, g.
Patent GB-1292923-A (GB)
Title: Device for controlling the feeding of webs, particularly textile webs, into machines for processing textiles, particularly textile finishing machines
IPC: B65H23/032
Filed: 1970-03-16
Abstract: 1292923 Feeding webs ELITEX-ZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REDITESLTVI 16 March 1970 [14 March 1969] 12462/70 Heading B8R A web 12, eg. of textile material, is fed on to needle chains 13, 14, for conveyance to a processing machine, by means of rollers 10, 11 carried by arms 1, 2 movable about respective pivots 3, 4 by hydraulic cylinders 17, 18 which are connected to respective hydraulic amplifiers 25, 26. Each amplifier comprises a control flap 34 mounted in a diaphragm 35 and biased by a spring 37; a force opposing the pull of spring 37 and representative of deviations of the web-edge from a desired path is also applied to the flap 34 by means of an elastic reed 36 which cooperates with an arrangement including a lever 40 associated with a scanning feeler 42 and a further spring 39. In operation, the control flap is in its neutral position when the web follows a desired path; deviations from this path cause movement of the control flap whereby the flow of fluid to the cylinders 17, 18 is regulated to cause corrective movement of the arms 1, 2 to restore equilibrium conditions.
Patent GB-1042413-A (GB)
Title: Frame structure for a model or toy building set
IPC: A63H33/04
Filed: 1964-03-25
Abstract: 1,042,413. Frame structure. G. K. CHRISTIANSEN. March 25,1964 [March 26,1963],No. 12558/64. Heading A6S. A toy building set has a frame comprising lower and upper frame members 2, 5 and posts 3, 4. The lower member 2 has a groove 21 which engages studs of building elements 1 and recesses 22 which receive projections 31, 41 of the posts 3, 4. The post 4 has two grooves 43 and a second projection 42 which engages recesses 52 of the upper member 5 which member has on its upper surface studs 51. The post 3 has a plane outer wall which lies flush against elements 1 (Fig. 1 not shown), and it may be provided with an upper projection. A post similar to the post 4 may be used horizontally to separate two parts of a window in which case it is used without end projections, or the vertical posts can be provided with recesses to engage such projections. The frame is suitable for windows but it could be used for partitions and wainscotting.
Patent GB-376865-A (GB)
Title: Drying-cylinder or roller for paper and pulp drying-machines
IPC: D21F5/02
Filed: 1931-04-29
Abstract: 376,865. Hollow cylinders ; papermachines. WALLDEN, C. H., Vallbo, Gothenburg, Sweden. April 29, 1931, No. 12621. Convention date, May 3, 1930. Drawings to Specification. [Classes 34 (i) and 34 (ii).] In a paper or pulp drying-machine, a hollow cylinder is used made of welded iron plate coated with chromium or other material of similar hardness, and the co-operating scraper is of much softer material than the coating.
Patent GB-934972-A (GB)
Title: Improvements in or relating to the editing of recorded magnetic tape
IPC: H04N5/78
Filed: 1962-04-02
Abstract: 934,972. Editing television tapes; head switching. AMPEX CORPORATION. April 2, 1962 [May 1, 1961], No. 12639/62. Class 40 (2). [Also in Group XL (c)] To INSERT a new piece of recording into or to ASSEMBLE a further piece of recording on to the end of an existing recording electronically, without disturbing the steady sequence of recorded control pulses on the tape, delay means are provided in switching the recording heads on or off to provide for the half second approximately, which separates the erase head 27 from the recording heads 16. The recording apparatus, generally as described in U.S.A. Specification 2,866,012, as adapted to use the so-called " INTERSYNC " arrangements, as described in Specification 915,254, has a twopart erase head 27, 29, the part 29 being switched off when the apparatus is set to INSERT, the existing track 18 from the previous recording controlling the relative drive of heads 16 and tape 10. In use, the tape is back-spaced some 10 seconds, the machine is started in playback mode to feed a monitor, and when the RECORD button is pressed, the erase head is energized, but the recording heads 16 are not switched over to record until the portion of tape shown as blank in the Figure has passed the heads 16. On INSERT, a similar delay between de-energizing the erase and record heads prevents any blanks being left. On ASSEMBLY, the heads are started similarly and after the delay, the usual 240 c/s. photoelectric means supplies the new control track 18. The delay circuits are detailed in Group XL (c).
Patent GB-182409-A (GB)
Title: Improvements in or relating to the control of trains
IPC: B61L3/22
Filed: 1920-12-23
Abstract: 182,409. Angus, A. R. Dec. 23, 1920. Drawings to Specification. Electrical systems, non-automatic.-Train-carried signalling and controlling apparatus, which are brought into operation unless electrically restrained by the energization of track conductors, which may include the rails, is controlled by the signalman to permit the passage of a train along a portion of track by means of track-controlling electroresponsive means energizable by switches operated by the signalman, but prevented from being energized either if the advance portion of track is occupied or otherwise out of order; the electroresponsive device when energized causes the completion of the circuit for restraining the action of the train-controlling apparatus, and this circuit is maintained in operation after de-energization of the electroresponsive means. The invention is applicable to apparatus according to Specification 173,531. The apparatus described is the same as is described in Specification 181,752.
Patent GB-1085367-A (GB)
Title: Ignition circuit
IPC: F02P3/08
Filed: 1965-03-25
Abstract: 1, 085, 367. Ignition systems. TUNG-SOL ELECTRIC Inc. March 25, 1965 [April 14, 1964], No.12772/65. Heading F1B . An ignition system comprises a pair of breaker contacts 12, 13 connected in series with a source of direct current 10, a primary winding 16 of a first transformer connected in series with the breaker contacts and the source of direct current, an inductive winding 24 on a ferromagnetic core 25, a semi-conductor gate controlled switch 22 the anode and cathode of the gate controlled switch and the inductive winding being connected in series and connected across the source of direct current, a control circuit for the gate controlled switch connected between the positive terminal of the current source and the control electrode of the switch, the control circuit including a secondary winding 18 on the first transformer and a first diode rectifier 27 poled so as to block normal current flow from the source, a storage circuit for storing a quantity of electricity generated by the inductor when the magnetic flux in its core collapses, the storage circuit including a storage capacitor 35 connected in series with a second diode rectifier 36 and connected to a coupling circuit for discharging the capacitor when the switch is made conductive, and an output transformer 30 including a primary winding 34 and a secondary winding 31 the primary winding being coupled to the storage circuit and the secondary being connected to a distributer 15. In a modification (not shown) the winding 24 is replaced by a transformer and a separate silicon controlled rectifier is employed for discharging the storage capacitor through the output transformer. In this embodiment a delay control circuit is coupled between the storage capacitor and the trigger electrode of the silicon controlled rectifier. The delay control circuit may include a Zener diode and a four layer rectifier.
Patent GB-640922-A (GB)
Title: Improvements in trestles for use by decorators, builders and others
IPC: A47B3/087
Filed: 1947-05-13
Abstract: 640,922. Trestles. THOMAS MACHINE CO., Ltd., THOMAS, A., and STAPLES, G. F. May 13, 1947, No. 12864. [Class 52 (iii)] A decorator's trestle, adjustable for height, has a deck 1 at each end of which are pivoted links 2 pivotally connected at 4 to legs whose upper ends may be connected to the deck at various positions. The legs consist of A-frames one leg frame being narrower at the top than the other so that its upper end may pass through the other frame when, during adjustment, the legs need to cross. One of the legs may be detached from its link so that the remainder of the trestle may be collapsed. An extension deck having one leg may be hooked on to the main deck and the trestle is constructed of aluminium or aluminium alloy.
Patent GB-737506-A (GB)
Title: Electric signal translating devices including transistors
IPC: H04B3/18
Filed: 1953-05-08
Abstract: 737,506. Transistors. WESTERN ELECTRIC CO., Inc. May 8, 1953 [May 9, 1952], No. 12890/53. Class 37. [Also in Group XL (c)] An electric signal translating device comprises a pair of transistors of like conductivity type having two like electrodes directly connected together, two other, unlike, electrodes connected directly together, and further connections to the remaining electrodes, whereby the arrangement effectively provides a single transistor. Fig. 1 shows a slotted slab of NPN material such as a single crystal of germanium or silicon which provides two junction transistors having emitter, base and collector electrodes, e1, b1, cl and e2, b2, c2 respectively, the two collector electrodes consisting of the common N portion 11. Emitter e1 is directly connected to base electrode b2 and the combination effectively provides a single transistor comprising base electrode b1, emitter e2 and collector (c1+c2). It is shown that the emitter, base and collector resistances of the combination may differ from those of the individual transistors, and in particular the current amplification alpha may be increased. Fig. 4 shows an alternative arrangement in which the two emitter electrodes are connected together and the base electrode of one is connected to the collector electrode of the other. The combination provides a transistor having base electrode (e1+e2), emitter electrode b1 and collector electrode c2. In a further arrangement, the base b1 of one transistor is connected to the emitter e2 of the other, and the collector c1 is connected to the base b2 of the other, to provide a combination effectively having base electrode el, emitter electrode (b1+e2) and collector electrode c2. If desired, the input signal may be applied to the (c1+b2) connection in this example. Fig. 9 shows an arrangement comprising three transistor elements in which the emitter of one is connected to the base of the next, the collectors are connected together, and the combination provides a unit having base electrode b1, emitter electrode e3 and collector electrode (c1+c2+c3). To facilitate the biasing arrangements, additional connections comprising high impedances may be made to the intermediate inter-electrode connections. The invention may also be applied to point contact transistors. The assembly may be enclosed in plastic cement. Specifications 694,021 and 700,231 are referred to.
Patent GB-794548-A (GB)
Title: Fuel injector system for an internal combustion engine
Inventor: POWELL ROBERT JAMES
IPC: F02M69/04
Filed: 1956-04-28
Abstract: 794,548. Spray carburetters. CONTINENTAL MOTORS CORPORATION. April 28, 1956, No. 13119/56. Class 7(3) The injection of fuel under pressure through a nozzle 26 downstream of the throttle valve is controlled by means 27 connected to the throttle valve and the fuel supply pipe 30 from an engine driven fuel pump is connected to a spring-loaded relief valve 50, Fig. 5, which sets the normal maximum fuel pressure, a restriction 56 upstream of the valve 50 causing the fuel pressure in pipe 30 to rise slightly if the engine speed rises at any fixed throttle setting. The fuel nozzle comprises a tubular member 25 in which are mounted two members 27, 28 having flat ends butted together by a spring 29. The fuel from passage 30 passes through an annulus 32 to a port 34 which is controlled by rotation of the member 27 having a recess 38 connecting port 34 to the orifice 26. As the throttle valve 22 is opened, member 27 gradually uncovers port 34 to increase the fuel supply, the idling supply being adjusted by angular adjustment of the member 28.
Patent GB-197943-A (GB)
Title: Improvements in wheel hubs
IPC: B60B3/18
Filed: 1923-01-08
Abstract: 197,943. Grant, R. R. Jan. 7, 1922, [Convention date]. Detaching from, and attaching to, permanent hubs.-The flanges 21, 22, of the hub 20 have convex bearing surfaces 23 which entirely support the wheel and have a narrow annular area of contact with concave recesses 15 in the faces of the wheel nave. The radius of curvature of the surfaces 23 is smaller than that of the surfaces 15 and the wheel nave is otherwise clear of the hub. The outer flange may be detachably secured by a cap nut 25 which is locked by a spring pressed pawl 28 engaging ratchet teeth 30 on the outer end of the hub 20 and adapted to be disengaged by pressure on the projection 31. Driving pins 19 carried by the fixed flange engage apertures in the wheel nave. The hub construction is stated to be of general application but specially designed for the wheel described in Specification 191,396.